"And he did not many mighty works there because of their unbelief." (Matt 13:58) There is an amazing thing that happens with matters in nature. When you heat two different matters with the same amount of heat or to the same amount of rise in temperature, they do not expand equally. You will notice that each of them will expand to its own features. Simply put, when subjected to the same amount of heat, different matters expand differently. This leads us to the third law of expansion, "Study the variables". A variable is any property that has the ability to vary or change. The truth is our variables are never the same. What constitutes your variables may not be what constitutes my variable; and as such it will be unwise to expect both of us to experience the same amount of expansion over the same period of time or by applying the same effort. In business, life, school, ministry variables abound. These variables can include brand popularity, strength of staff, location, environmental factors, etc. As you apply yourself to expand, study your variables and see the effects they are having on your outcome. If one variable seem to exert more control over the total outcome, then direct more of the heat towards that variable. Jesus while He was on earth was a great miracle worker. No sickness was left unhealed at the touch of His hand or by the command of His spoken word. Yet, the Bible said that He could not do much miracles in His hometown because of some variables. The problem was not with Jesus. .
It wasn't that He was a miracle worker anymore or that He lost His power. No, the problem was the variables around Him at His hometown which inhibited the expansion of His ministry there. That means if Jesus had wanted to plant a church in His hometown, He would have had less and slower growth rate compared to any other place. That was an unfortunate thing but it was still the truth.
Variables are very powerful. They must not be taken for granted. They must be studied and possibly controlled for maximum outcome. Don't just assume that because you did it like that five years ago and it worked; so it will also work that way today, the variables must have changed!